online toxicity monitoring Articles

  • Online Instrumentation to Protect Wastewater Facilities from Toxic Chemicals

    ABSTRACTSecurity concerns are driving current research to develop means of detecting toxic chemicals in wastewater influents as few online instruments are currently available for this purpose. Online respirometers such as the STIPTox are the obvious choice using existing, established technology. One of these units was recently used successfully in the WERF project 03-CTS-7S “Feasibility Testing ...

  • EPA launches online discussion

    Ever read a U.S. Environmental Protection Agency (EPA) press release and say to yourself or others, “Gee, why is EPA pursuing that matter - there are a lot of other more important enforcement priorities?” Well, now is your chance to help shape EPA’s 2011- 2013 fiscal years enforcement priorities. EPA launched an online discussion forum on August 31 to receive input on future priorities for EPA’s ...


    By Bergeson & Campbell, P.C.

  • Insect cell-based impedance biosensors: a novel technique to monitor the toxicity of environmental pollutants

    Abstract Cell biosensors are currently emerging as novel, sensitive techniques to monitor the toxicity of environmental pollutants. Here, we have developed electric cell-substrate impedance sensing (ECIS) for on-line monitoring of the behavior of insect cells. Cells were cultured on a microarray of eight small gold electrodes, deposited on the bottom of tissue culture wells. Upon inoculation, ...


    By Springer

  • Monitoring Phenol in Water

    The Situation A plant located in the eastern United States manufactures phenolic resin for applications in plastics molding. This plant uses well water for cooling its reaction process and then discharges the water into a local creek. A leak in the reactor and associated cooling equipment would cause phenol and phenolic compounds to contaminate the cooling water. Such a leak could ...

  • Water quality monitoring in wetland ecosystems using microbial model communities

    This study reviews the concept of model communities for water quality assessment in aquatic ecosystems. The feeding habits of protozoans were used to unite species into functional, trophic groups. Colonising communities were dominated by bacterivorous Flagellate Species (Sf). A new Index of Periphyton Flagellates (IPF) as an indicator of the trophic status of a water-body was developed. ...


    By Inderscience Publishers

  • Case study - Control and monitor algae in a lake

    As part of the Clearwater PMPC project, 2 MPC Buoys were deployed in the Skrzyneckie Małe Lake to test the performance of this unique technology. The Challenge: Control and Monitor Toxic Algal Blooms The ClearWaterPMPC project was initiated by LG Sound and funded by "Research for SMEs" within the EU 7th Framework Programme. The goal of the ClearWaterPMPC (Predicting, ...


    By LG Sonic

  • Neosens™ on-line Fouling monitoring for Cooling Towers

    A New Approach to Fouling Control Neosens offers innovative, cost effective sensor solutions for monitoring the presence of biofilm and scale in cooling towers, heat exchangers and other industrial process applications. Fouling in cooling systems is a worldwide, multi-billion dollar problem, reducing energy efficiency, increasing maintenance costs and creating health risks due to ...


  • Analox case study: Monitoring oxygen at Cranfield airfield

    Introduction For personnel safety, monitoring of oxygen levels was required as part of an experimental field campaign based at Cranfield airfield. This experiment was undertaken by researchers in the atmospheric physics group at Imperial College London. The researchers are interested in measuring Far-infrared radiance fields in the atmosphere ...


    By Analox Sensor Technology

  • Case study - N°AA3 – Ambiant air monitoring – WWP TRS MEDOR odor monitoring

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® ...


    By Chromatotec Group

  • Drug effectiveness reporting and monitoring systems: discussion and prototype development

    While tracking systems have been developed to decrease occurrences and consequences of medication errors in healthcare facilities, there is a growing need for similar systems to monitor drugs that have just entered the market with unknown adverse events. Between 1997 and 2005, the FDA's MedWatch system successfully identified 15 drugs with toxic side-effects; it took an average of 5.9 years for ...


    By Inderscience Publishers

  • A new monitoring method of CRVI in water using boron-doped diamond microelectrodes

    Boron doped diamond electrodes were used for the amperometric measurement of chromiumVI in water. A linear relationship of the current density as a function of the chromiumVI concentration was observed for concentrations comprised between 50 ppb and 4 ppm. Such results are particularly promising for the monitoring of chromiumVI in liquid effluents or process baths of several industries (stainless ...


  • Case study - N°NG1 – Natural gas monitoring – Medor Exp

    Context & Challenges Natural gas used for household consumption typically contains odorant sulfur components for safety reasons. As natural gas is normally odorless, the sulfur components are artificially added. When natural gas is transported between various companies, regions or countries, gas companies have to verify that the sulfur species are present as specified. ...


    By Chromatotec Group

  • Case study - N°AA2 – Ambiant air monitoring – WWP TRSMEDOR deodorisation

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® ...


    By Chromatotec Group

  • Case study N°AA1 – Ambiant air monitoring – WWP TRS MEDOR H2S filter

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® ...


    By Chromatotec Group

  • Case study - N°AA4 – Ambiant air monitoring – WWP TRS MEDOR Stripping

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® ...


    By Chromatotec Group

  • Implementation of an automatic and miniature on-line multi-parameter water quality monitoring system and experimental determination of chemical oxygen demand and ammonia-nitrogen

    An automatic, miniature and multi-parameter on-line water quality monitoring system based on a micro-spectrometer is designed and implemented. The system is integrated with the flow-batch analysis and spectrophotometric detection method. The effectiveness of the system is tested by measuring chemical oxygen demand (COD) and ammonia-nitrogen in water. The results show that the modified system ...


    By IWA Publishing

  • Improved sensitivity to heavy metals in the bioluminescence assay using alternative salt solutions

    Introduction The marine bacterium Vibrio fischeri is widely used for the toxicity assessment of environmental samples. The toxicity is measured in a medium containing 2% NaCl. When the bacteria are exposed to toxic compounds, the light production is inhibited. Toxicity values are obtained after 15 and 30 minutes exposure and expressed as EC50 values, the effective concentration causing 50% loss ...


    By microLAN B.V.

  • Installation of the fixed gas detection

    OC-F08 fixed gas monitor with the original imported sensor used to detect the Oxygen gas, combustible gas, toxic gas, CO2, etc. With the different working principle, Electrochemical sensor for O2 and toxic gas, Catalytic combustion sensor for combustible gas, PID sensor for the VOC, Infrared sensor for the CO2 ...

  • CFD modelling for atmospheric pollutants/aerosols studies within the complex terrains of urban areas and industrial sites

    Computational fluid dynamic (CFD) modelling of pollution dispersion and chemical conversion to aerosol particles in the atmospheric boundary layer (ABL) has been studied. The investigation focused on the numerical modelling above complex orographic terrains of urban areas and industrial sites including the dispersion of toxic substances in the air as a result of accidents. A finite-rate model of ...


    By Inderscience Publishers

  • Speciation of five arsenic compounds in urine by HPLC/ICP-MS

    High-performance liquid chromatography (HPLC) coupled to an ICP-MS has become an invaluable analytical tool for the determinations of trace levels of individual arsenic compounds (speciation). Speciation of arsenic is used to improve our knowledge of arsenic’s biochemical interactions and to evaluate toxicity risks. The toxicity and bioavailability of arsenic is highly dependent on form or ...


    By PerkinElmer, Inc.

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